WASHINGTON — An avalanche of new federal regulations piled on during President Obama’s first term is costing Americans an added $70 billion a year, a new study found.

The Heritage Foundation analysis weighed 131 major regulations, counting only those that cost at least $100 million a year.

The worst? New EPA fuel-economy standards that add about $1,800 to a new car’s sticker price and cost consumers an estimated $10.8 billion annually.